If you can provide more context — like what device it came from (brand, model), whether it's a sticker or silkscreened on the board, or where you found the code — I can give you a much more accurate and useful post.
Even a "Full" tuner is susceptible to age and environment. Here are the most common failures: tuner tv tp p04 1220 00 00011 full
: Never use a wrench to tighten your coax cable; finger-tight is sufficient. Over-tightening can crack the solder joints inside the tuner. If you can provide more context — like
He desoldered a small, rectangular silver box from the corner of the board. Stamped on its side in tiny, precise black ink was the designation: TP P04 1220 00 00011 FULL tuner tv tp p04 1220 00 00011 full